28706001 has 16 divisors (see below), whose sum is σ = 40064640. Its totient is φ = 18247680.

The previous prime is 28705961. The next prime is 28706003. The reversal of 28706001 is 10060782.

It is not a de Polignac number, because 28706001 - 2¹¹ = 28703953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28706003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36945 + ... + 37713.

It is an arithmetic number, because the mean of its divisors is an integer number (2504040).

Almost surely, 2^28706001 is an apocalyptic number.

It is an amenable number.

28706001 is a deficient number, since it is larger than the sum of its proper divisors (11358639).

28706001 is a wasteful number, since it uses less digits than its factorization.

28706001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1336.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 28706001 is about 5357.7981484935. The cubic root of 28706001 is about 306.1899265203.

Adding to 28706001 its reverse (10060782), we get a palindrome (38766783).

The spelling of 28706001 in words is "twenty-eight million, seven hundred six thousand, one".